CVE-2026-75149High· 8.8▾ Twilight

marimo before 0.23.15 contains a code injection vulnerability in the notebook configuration handler that allows attackers to execute arbitrary commands by supplying a crafted MCP server entry with an attacker-controlled command value emb…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score49/ 100 · Moderate

impact 48.4 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Aug 19, 2026

Updated

Sep 16, 2026

CVSS

8.8

Vendor

—

Product

—

CWE

CWE-94

Depth score

49 · Moderate

EPSS

0.64% · p49

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS history

Exploit-prediction probability, daily snapshots since Sep 16.

0.6% → 0.6%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 28 days

Aug 19, 2026Published
Disclosed via NVD
Sep 16, 2026Record revised
Last analysed / modified upstream
Sep 16, 2026EPSS first tracked
0.6%

CWE-94 #nvd

Full technical detail▾

Overview

marimo before 0.23.15 contains a code injection vulnerability in the notebook configuration handler that allows attackers to execute arbitrary commands by supplying a crafted MCP server entry with an attacker-controlled command value embedded in a notebook. When the notebook is opened in edit mode, marimo launches the specified command as a local subprocess before any notebook cell is executed, requiring no authentication or cell execution to trigger the vulnerability.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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